I Need Guns, Lots of Guns
Each battle draws you closer to the inexorable final fight of the game in Chambois. Along the way you will learn not all roads lead to victory, but there are still ways to achieve your objectives. You will have to rely on a combination of the on fly change in tactics no matter how many times you will eventually play through a certain mission. The AI isn't completely iditoic and you must also learn to outthink rather than outfight them.
You will also get to call in air strikes occasionally. More and more its behind just simple brawling, shooting, and heading through hails of ammo fires. This is war at least a pinch of it, and as for the men who really fought through these things. You wonder just how they did it, but then its not something you can explain, you feel it and you do it because its what you must...