It's kind of interesting...One is a legend, a myth that might or might not have happened and the other one, it's sure it did happen.
The first one is the William Tell legend of Switzerland, that is known in all Switzerland and part of the swiss identity (it does seem).
I'm lazy so here the wikipedia.
Several accounts of the Tell legend exist. The earliest sources give an account of the apple shot, Tell's escape, and the ensuing rebellion. The assassination of Gessler is not mentioned in the Tellenlied but is already present in the White Book of Sarnen account.
The legend as told by Tschudi (ca. 1570) essentially follows the account in the White Book, but adds further detail, such as Tell's given name Wilhelm, his being from Bürglen in the Schächental, and the precise date of the apple-shot of 18 November 1307.
William Tell was known as a strong man, a mountain climber, and an expert shot with the crossbow. In his time, the Habsburg emperors of Austria were seeking to dominate Uri, and Tell became one of the conspirators of Werner Stauffacher, vowing to resist Habsburg rule. Gessler, the newly appointed Austrian Vogt of Altdorf, raised a pole under the village lindentree, hung his hat on top of it, and demanded that all the townsfolk bow before the hat.
On 18 November 1307, Tell visited Altdorf with his young son and passed by the hat, publicly refusing to bow to it, and was arrested. Gessler—intrigued by Tell's famed marksmanship but resentful of his defiance—devised a cruel punishment. Tell and his son were to be executed. However, he could redeem his life by shooting an apple off the head of his son Robert in a single attempt. Tell split the apple with a bolt from his crossbow. Gessler then noticed that Tell had removed two crossbow bolts from his quiver. Before releasing him, he asked why. Tell was reluctant to answer, but after Gessler promised he would not kill him, he replied that had he killed his son, he would have killed Gessler with the second bolt. Gessler was furious and ordered Tell to be bound, saying that he had promised to spare his life, but instead would imprison him for the remainder of his life.
Tell was brought to Gessler's boat to be taken to the dungeon in the castle at Küssnacht. A storm broke on Lake Lucerne, and the guards were afraid that their boat would sink. They begged Gessler to remove Tell's shackles so he could take the helm and save them. Gessler gave in, but once freed, Tell led the boat to a rocky place and leapt from the boat. The site is already known in the "White Book" as the "Tellsplatte" ("Tell's slab"). Since the 16th century the site has been marked by a memorial chapel.
Tell ran cross-country to Küssnacht. As Gessler arrived, Tell assassinated him, using the second crossbow bolt, along a stretch of the road cut through the rock between Immensee and Küssnacht, now known as the Hohle Gasse. Tell's blow for liberty sparked a rebellion in which he played a leading part, leading to the formation of the Old Swiss Confederacy.
According to Tschudi, Tell fought again against Austria in the 1315 Battle of Morgarten. Tschudi also has an account of Tell's death in 1354, according to which he was killed trying to save a child from drowning in the Schächenbach River in Uri.
And then, the second one is the history of how Geneva defended itself from invaders in 1602. (Geneva wasn't part of any country and not part of Switzerland at the time). Exclusively celebrated in the Geneva canton (district) but clearly representative of the swiss philosophy of defense and independence.
On December 11 and December 12 (Old Style) 1602 — the darkest night of the year — the forces of the Duke of Savoy, under the command of the seigneur d'Albigny, and those of Charles Emmanuel's brother-in-law, Philip III of Spain, launched an attack on the city-state of Geneva. The troops marched along the Arve River at night and assembled at Plainpalais, just outside the walls of Geneva, at 2 o'clock in the morning. The original plan was to send in a group of commandos to open the city gate and let the other troops in. The Geneva citizens defeated the invaders by preventing them from scaling the wall using cannon fire, and by fighting in the streets against the few who managed to climb over (a climb in French is an escalade). The alarm was raised, the church bells were rung and the Genevese were alerted. The night guard Isaac Mercier succeeded in cutting the rope holding up the portcullis, thus foiling the plan to open the main city gate. The populace fought alongside their town militia and the duke's 2000-plus mercenaries were defeated. The Genevese lost 18 men in the fighting; the Savoyards suffered 54 fatalities and the troops had to retreat. Thirteen invaders who had been taken prisoner, including several well-born gentlemen, were summarily hanged the following day as brigands, since they could not be treated as prisoners of war, peace having been repeatedly sworn on the part of Savoy.
According to Genevese legend, Catherine Cheynel ("Mère Royaume"), originally from Lyon and the wife of Pierre Royaume, a mother of 14 children, seized a large cauldron of hot soup and poured it on the attackers. The Royaume family lived just above the La Monnaie town gate. The heavy cauldron of boiling soup landed on the head of a Savoyard attacker, killing him. The commotion that this caused also helped to rouse the townsfolk to defend the city.
After the defeat (and after a retaliation campaign by Geneva against Savoy, known as the contre-Escalade, that failed to meet its objectives), the Duke of Savoy accepted a lasting peace, sealed by the Treaty of St. Julien of July 12, 1603.
The story of L'Escalade is told in a song called "Cé qu'è l'ainô", written in a Franco-Provençal dialect around 1603 by an unknown author. The song has become the "national" anthem of Geneva; while the complete version comprises 68 stanzas, only four of them are usually sung.
It was also celebrated in verse by Samuel Chappuzeau in his "Genève Délivrée", the manuscript of which was presented to Geneva after his death in 1701.
Although the armed conflict actually took place after midnight, in the early morning on December 12, celebrations and other commemorative activities are usually held on December 11 or the closest weekend. Celebrations include a large marmite (cauldron) made of chocolate and filled with marzipan vegetables and candies wrapped in the Geneva colours of red and gold. It is customary for the eldest and youngest in the room to smash the marmite, while reciting, "Ainsi périrent les ennemis de la République! " (Thus perished the enemies of the Republic), referring to how Catherine Cheynel, better known as "Mère Royaume," poured boiling hot vegetable soup on soldiers climbing up the walls of the city.
Anyway, kind of funny when you know that Geneva is the international city of Switzerland now but it really shows the importance of a self armed population. And it's probably why they don't want the UE, and Brussels, submitting them into total obedience, because their stories goes against that.