The easy way is always mined. The important things are very simple. The simple things are very hard. If you are short of everything except enemy, you are in combat. When you have secured an area, don't forget to tell the enemy.
Incoming fire has the right-away.
No combat ready unit has ever passed inspection. No inspection unit has ever passed combat. Teamwork is essential. It gives them other people to shoot at. If the enemy is in range, so are you.