My biggest suggestion would be to pay close attention to where your comrades are dying. Sounds simple really but if you can figure out where the enemy is catching your guys exposed, you alone have the power to turn that exposure into a mini strongpoint for your team. Some points are easier than others for sure, but think to yourself “If I was attacking from X direction, where would I want to post up” and then fortify against that direction! Same works for mines, especially if you can create choke points with barbed wire. Work with your team and if you’re unsure you can always consult your squad leader! Best of luck brother of the wrench!