Arsene Wenger's greatest achievement in his football career, as a player and as a manager, occurred in the 2003-04 season when Arsenal stormed their way to the Premier League title.
However, it was not solely the honour of being crowned England's best, but the manner in which the Gunners remained undefeated throughout the entire 38-game campaign.
While analysts often claim the North Londoners adhered to a 4-4-2 formation, in truth it was a flexible set-up, with a tendency to become 4-2-3-1.
Bonkers glovesman Jens Lehmann was the primary choice between the posts and was protected predominantly by hulking right back Lauren, centre back partners Sol Campbell and Kolo Toure, with academy product Ashley Cole at left back.
Invisible wall Gilberto Silva anchored the midfield, with box-to-box sensation Patrick Vieira alongside him, while fan favourite Fredrik Ljungberg, Dutch trequartista Dennis Bergkamp and cavalier winger Robert Pires provided an attacking trident behind skilful Frenchman Thierry Henry.
For Henry, there is one man who should be more heralded than he currently is when it comes to Invincible legends - vital squad player Sylvain Wiltord.
On World Cup duty in Brazil with the BBC, Henry met Wiltord and said on his official Twitter account: "Wiltord was one of the most underrated Invincibles - great player."
Wiltord played a dozen games in the 2003-04 season, scoring thrice - two against Middlesbrough and another against Manchester City