Suppression is your own faction in a training mode, while it does count towards experience, it has no affect on contracts since it's your own faction, on it's own turf, in a skirmish. There can be major victories in any mode. For any attacking team, it's if you accomplish all objectives within a certain time frame. For example, you have 20 minutes to blow up Objective C in the Sabotage battles. If you do it I think in either 8 or 10 minutes, it's a major victory. Anything more it's a minor victory. If you're attacking and you don't finish the mission, it's obviously a defeat. How it differs between a major and minor defeat is if you're able to take both Objective A and B, and unlock Objective C. Simply, if at the end of the match you don't take C, but were able to unlock the objective, it's a minor defeat. If you couldn't unlock C, it's a major defeat.
Each battle mode has it's own parameters on what constitutes a major/minor victory/defeat. I don't play acquisition or domination as much since Valor gets 5% bonus experience (twice if the major contract is held) for the sabotage missions, and is a great way to level up quickly if your faction has the "Major contract" in Sabotage, because at the end of the match, you get 10% more experience.
---------- Post added at 08:57 PM ---------- Previous post was at 08:54 PM ----------
Originally posted by Penguin
Also, I'm level 15 now and I have the leadership option which I take. Can I call in tactical strikes and put Fragos and stuff?
You can be a squad leader, and yes you can do some stuff. In Domination I know you can do tactical strikes and have UAV scout type thing fly overhead of an area you designate. Though the AA battery must be destroyed first. In most matches you can lay tactical chemical gas. And for your squad, you can change whatever your objective is to take something (which changes the Frago).
My advice to you is be careful being a squad leader, because you need to know what you're doing and be able to coordinate 7 other people including yourself, and figure out how is the best way to do it (sometimes your subordinates are more seasoned, so letting them take the lead is the best option while say....you sneak around and give support and communicate).