friendly

Inclined to help or support; not antagonistic or hostile.

“a government friendly to our interests”

Characteristic of or befitting a friend.

“friendly advice”

“a friendly neighborhood”

Easy to understand or use.

“user-friendly computers”

“a consumer-friendly policy”

Troops belonging to or allied with your own military forces.

Of or belonging to your own country's forces or those of an ally.

“in friendly territory”

“he was accidentally killed by friendly fire”