If someone were to ask: What do you say regarding warfare today? People do not fight on horses and camels; rather, they fight with aircraft, tanks, and the like.
The answer is: Each thing is analogized to what resembles it. Aircraft resemble horses because of their speed, and they are even greater in danger. Tanks, transport vehicles, and the like resemble camels. Thus, their owner receives one share and they receive two shares. As for the foot soldier who walks on his feet, such as snipers, he receives one share.
If someone were to ask: The pilot does not own the aircraft, so do you give him three shares?
We say: Yes, we give him three shares: one share for him and two shares for the aircraft. The two shares of the aircraft revert to the public treasury, because the aircraft is not owned by a particular individual; rather, it belongs to the government. If the ruler sees fit to give the two shares to the aircraft commander, there is no harm in that, for it encourages him in this dangerous work.
The army shares with its detachments in whatever they acquire as booty, and they share with it in whatever it acquires. The one who unlawfully takes from the booty has all his baggage burned, except for his weapons and his copy of the Quran.
His statement, “The army shares with its detachments in whatever they acquire as booty, and they share with it in whatever it acquires,” is because the army is one body. What is meant by its detachments are those which it dispatches after entering enemy territory. It has already been mentioned that a detachment may be sent out at the beginning of the fighting, or on the return journey after the fighting. Whatever booty the detachments acquire is added to the army’s booty, and likewise the army’s booty is added to that of the detachments. However, it has already been mentioned that the imam may grant an additional share of one-third on the return journey and one-fourth at the outset. Ibn al-Mundhir said: We have related that the Prophet said, “Their detachments are returned to those who remained behind.” (1)