Ancient greek warriors looked nothing like the idealized portrayals of said statues.
I've never met any ancient Greek warriors. I'm basing my observations on Greek art (look at the terracotta amphora paintings) and what I know about fitness.
Muscle develops quite differently if you're building it for tone and to show, which has to do with training all muscle groups in certain ways, getting a very specific diet etc, whereas it develops differently through repetitive battle excersise (which strains only some muscle groups, and some more than others) eating what you find, and generally rough livin', where even deformations occur through malpractise. Spartans weren't 'oh am I so pretty?'. This jerk isn't what happens to people who kill to live.
Some misconceptions here. When muscles are under stress, they tend to get micro-tears in their fiber. The body reacts by re-building them stronger. Building muscle for defintion is a common misconception. Muscle can do one of three things: get larger, get smaller, or stay the same size. Moving heavier weight around will help them build bigger and faster, but it won't change anything other than size. The shape relates to individual genetics and can't be altered short of surgery.
Bodybuilders definitely don't work all the muscle groups equally (they keep the abs smaller than say powerlifters would, and many do little ab work at all). It's not important for them to balanced their bodies like weightlifters, since they're not the ones breaking records. The cardio involved with "battle exercises" and marching with equipment would work the full body, but wouldn't isolate the groups specifically.
Definition has everything to do with diet and very little to do with working out. A low calorie, low fat diet will produce a much leaner, stringier look. The chunky weightlifter (not bodybuilder) type relies on a high protein, calorie rich diet (5-7 meals/day plus) and keeps himself very well hydrated. Bodybuilding combines the two, as the man will "bulk" until several months before a comeptition, when he will began "cutting", a process that involves a drastic change in diet. His exercise shifts to focus on cardio, and he will typically lose 30-50 pounds in these several months. Before the competition itself, he drops his water weight, also. On the day of the competition he is dehydrated man with large muscle, and very little fat.
I'd conclude that because of the exercise and meager diet, Greek soldiers would be lean and defined, with strong legs (climbing over that rocky terrain) but a small, wiry physique.
