[@Haeo]
WWII-era technology?
Well in that case, everything's gotten even worse. The only advantage is the 'slightly' armored clothing, since most WWII-era clothing was simply thick, durable clothing, and not 'armored.'

That tank is guaranteed to be shit, or, if it's not, to be flawed.
The tank would probably suffer from a lack of ammunition, and too much recoil. The reloading would be terrible- that turret is rather small- and the large gun combined with the small turret ring would likely lead to a slow turret traverse speed. The gun IS rather large, even if short, and so aiming it vertically would be a pain as well. It might be quick, but it would have poor reaction time, a slow rate of fire, and limited in-field use before needing to be repaired.

That AFV is guaranteed to be shit, or, if it's not, to be flawed. It suffers some of the same problems as the tank- heavy barrel, small turret, what appears to be a large gun. It uses large rubber wheels, so that's a bonus, but it's still a little iffy. Like the tank, it'd suffer from poor reaction time, likely a long reload time, and limited in-field use. 

The design of both vehicles is that of a light vehicle- it wouldn't have an engine powerful enough to ship around heavy armor. Thus, they'd likely to be pierced easily by enemy armor or anti-armor weaponry. They'd best be used as fire support- sitting behind the infantry, preferably with top-down cover, and hitting an enemy position, such as a bunker or a building. Defensive roles would be recommended. And with WWII technology, camouflage is very important. Being colored blue in a European theatre... bad idea. They'd be highly visible, easily spotted, and easily penetrated. Again, defensive role behind cover is recommended.

Hmmm...
World War II technology.

Skirts and blazers. And some trousers.

Considering how cold it is during the wintertime, I'd think that the first winter that comes along would wipe them out, or at least give them such an illness that they'd be too sick to fight when the Germans- or whoever the enemy may be- come knocking. Besides that, they'd be demoralized VERY easily. War isn't a place where you stand up- you'll be crawling, digging in, and crouching about, leaning against dirt, mud, wood, brick, and metal. That sort of clothing would get dirtied very easily, likely stained very easily, and provide little protection. 

In foxholes, they'd get muddied and dirtied, again, very easily, and I'm quite sure that a cute girl with nice thighs won't be feeling so great if she's soaked in cold mud from last night's rain- with the enemy constantly firing, occasionally shooting your friend in the face or shoulder. It might boost a man's moral a little, buuuut they might be staring at those thighs and thinking about them too much, and cause them to lose that much focus, and end up a little short on the draw and get shot in the face because of it. It'd cause scuffles and fights, over insult, unintended insult, or disagreement. Men in wartime could be very scary...

Quite obvious it's anime. It throws itself up in the air, proclaims itself to be beautiful and amazing, while defying logic in almost every possible way.