Vanguard. Fight with honour. Charge with honour. Die with honour.
But seriously, not to knock the Soldier class, it's always been on my 'low tier' of classes to choose from, because anyone who knocks the Vanguard has obviously not slammed into an unarmoured enemy, sending them flying, blasting them with a shotgun shells and elbowing their faces off, blowing his pals away and walking out with but less than a centimeter of health remaining, skull abuzz with an actual adrenaline rush and a grin on your face.
I just never liked the Soldier much, because as cool as Adrenaline Rush was, I disliked the fact that I ended up playing the game much more like a shooter than I was an RPG. I was never pinned down in cover on Insanity, quickly evaluating my targets, the best enemy to charge, the best location to clear as many enemies as fast as possible without being overwhelmed. I was never conducting ACTUAL guerrilla warfare against my enemies as an Infiltrator, quickly Cloaking, running to a better location and picking off another enemy, before Cloaking once again (one of the best experiences I had in the game was the fight before the Praetorian on Horizon on Insanity. My squadmates were dead, the Scions were on my ass and Husks were rooting me out, an experience where I constantly found myself on the move, on a head rush, a little high from fear and adrenaline, brought on by immense risk taking, strategy and luck. A similar experience for the fight immediately after). I never had the satisfaction of clearing a room in naught but a minute without firing a bullet as an Adept and an Engineer. Soldiers just made me feel like I was playing Gears of War with a really cool ability accessed by Y.