How Many Men Would Survive?

"Ok, I'll go through the forest"
"You should take some of my men since you'll have a better chance of killing more of the enemies"
"Thanks"
He gives you 30 men and you walk towards the forest
When your walking through it you hear a noise and you turned towards it to see an arrow almost hitting the top of your head
You realize that the enemies decided to go through the forest as well
You can only see 7 of them but there may be more so you...