I have not used all the men in the game by any means. Some simply are not suited to my style of play (especially those with low endurance; my boys tend to get hit) and others for various reasons just don't appeal to me.
The following remarks are highly subjective and your own experience may be very different; don't take this as gospel by any means. Still, perhaps a few words about the men I have used could be of interest:
WILLIAM BROADHURST. My standard #1 man for all the European missions except the frogman crap. As you know if you've read the walkthroughs, I use disguises a lot, and he's got the best stealth rating of anybody except Glesby - and better endurance than Glesby - so he's a natural. I can leave him on his own and he'll shoot when the time comes and he'll hit what he's shooting at, too. Only weakness is medical skills; it takes him a few passes to bandage up any serious injury.
PATRICK MULHOLLAND. Stone killer. Reactions like a damn rattlesnake; after any group encounter with the enemy, a check of the chat log usually will show that Mulholland fired first and scored the first hits and sometimes all of them. I've known him to wipe out two or three of the enemy while everybody else was getting their fingers out. Not much on stealth and sometimes a little too aggressive - he'll leave cover and he'll go looking for trouble - and weak on first aid skills, but an A Team man all the same.
BASIL ELLIOTT. Excellent all-around man. Steady, good shot, quick reactions. Not bad on stealth either although I wouldn't want to risk him going after the Baroness.
DAVID FOREMAN. A joy and a delight to work with. Usually first to shoot and generally scores. Excellent medical skills, too; in Burma he was both the team sniper and the aid man. A little on the fragile side, not as high endurance as some of the others, but his ability to patch himself up rapidly goes far to compensate.
IRWIN CARLYLE. Good shot, solid as a rock and damn near as tough, and quite good on stealth.
JULIAN CUNNINGHAM. Another first-rate fighter with fast reactions and a good shooting eye. Only used him in Burma but he performed very well in the jungle and that's an extremely demanding environment.
DOUGLAS LAUER. Oh, Lauer, Lauer, I never did make up my mind about you...he was part of my A Team and maybe that's why he seemed sometimes to be a bit of a weak link; next to Broadhurst, Elliott, and Cunningham, anybody would have trouble measuring up. Excellent shot, usually the designated sniper but good with any sort of weapons and always gave a good account of himself - once he decided to get in on the shooting. But he just wasn't very alert; he was always the last man to open fire and I found that I couldn't count on him to guard a critical point - the bad guys kept getting by him. He got hit a lot too. Good man within his limitations but you needed to make allowances.
ROBERT CZAKOWSKI. Whom I always thought of, inevitably, as Jackoffski. Another one I never quite made up my mind about; a bit like Lauer really, excellent shot and very steady but occasionally a bit slow to identify and attack targets.
KEVIN TURNER. I only used him in Burma, where he carried an M-1 rifle and used it to very good effect. Energetic fighter, always ready to open fire, spotted targets quickly and responded fast when attacked. Tendency to get hit, though; he didn't take cover very well.
JOCK DEAN. I grew rather fond of Jock; he wasn't the best shot in the world and his judgment sometimes wasn't too great - he got hit a lot too - but he'd open fire on a mosquito farting and he was tough and fearless. A better man than his numbers might suggest.
FREDERICK MALLORY. I've used him - through the North Africa campaign several times - but I finally gave up. His strong point is endurance; he's a buffalo for punishment. Unfortunately he's a moron. I don't know how many times I've seen him stand there with his finger up his ass, with an enemy right in his face, and fail to shoot; he's not a bad shot when he does remember that that's what he's supposed to do, but you can't count on him to do it. (Unless the situation is such that he needs to refrain from shooting - if he needs to haul ass to join you, he'll stop and get into gunfight every time.) He can be valuable for his endurance but only if you're going to control him yourself; you can't count on him to do his part on his own.
ROGER HENDRY. I used him many times in North Africa and once I used him in the Czech campaign too. (Tired of dealing with Lauer.) He performed impeccably both times. Good shot - amazingly so with a rifle, I've seen him make shots with an open-sighted Mauser that Jackoffski had missed with a scoped Springfield - good endurance, good responses and not bad on stealth.
DANIEL O'SULLIVAN. I tried him several times - in Norway, in North Africa, even in the frogman/fortress mission - and he just never measured up. For all his Wild Irish Rogue image, he's got the reactions, and the intellect, of a dead clam. After a fire fight I'd check everybody's weapon to see if anybody needed to reload or get more ammo, and time and again he'd be the one who hadn't fired at all. Even Malory would be better.
J0HN GLESBY. Outstanding. I used him once in the Austrian campaign, as a backup in case something happened to Broadhurst, but didn't really form an opinion. Then I tried him on the desert team and ended up putting him in the #1 slot for that campaign. He's got fast reflexes, he can shoot, and his stealth rating is right up there with Broadhurst's; in fact he's the only alternative to Broadhurst for the high-stealth missions. Endurance isn't all that high but his above-average medical skills go far to make up for it; if he gets hit he can patch himself up very fast.
HARRY COLLINS. I only used him in the second frogman mission, and I always use throwaway men for that - since I hate the mission, I use men that I won't miss if they get killed - but he was the only one on the team who showed any real potential. First to fire every time, which is always a good indicator, and sometimes he was the only one to fire while those other mumblewits stood around playing with themselves. I'd like to use him more some time.
SIMON FINCH. Used him several times on frogman missions. Useless as tits on a boar hog. Couple of times I lost it and shot him myself, he was acting such a geek. Creepy looking son of a bitch, too. Highly expendable.
JAMES SAUNBY. Only used him once and as I recall he performed in an adequate if undistinguished way, in an undemanding mission. Don't really remember much about him.
PAUL TATNELL. Another one-shot also-ran. Couldn't have been very good or very bad or I'd remember more about him.
PETER ASH. Used him once in that first frogman mission, which is essentially lone wolf; so I was controlling him the whole time, and never had a chance to find out what he could or couldn't do on his own. I just picked him more or less at random.
That's all at present. Will update this list in the light of any future experiences.