These are one of the sets from Through jungle and desert.
As far as I can see, there are no copies of these cards freely available.
If someone has them and is willing to do so, please add them!
The image above is the only one I have found, but it does allow me to make a list.
The first 11 appear in various other sets, so I have made links to them, the remaining 4 are unique to the jungle.
Note: there are actually 20 cards in the set, but 5 are duplicates.
2 Foxhole = Fortify
3 Heat of battle
4 Out of ammo
5 Pull back
9 Return to duty
10 Armour bulldozer
11 Improved gunnery sighting
13 Jungle fighters
15 Jungle fever