How to introduce American M7 Pastor Self-propelled Gun?

Pastor M7 self-propelled gun of the United States is a self-propelled gun developed by the US military during World War II. When it entered the British service, the British gave it the title of "priest".

This is because it has a pulpit-style machine gunner position and follows the name of the British "Bishop" self-propelled gun, and the British final naming scheme also adopts the name of 105mmSP priest self-propelled gun.

The naming of priest-style self-propelled artillery also established the tradition that the British army named the self-propelled artillery after clergy in the future, such as the later "housekeeper-style" and "monastery-style" self-propelled artillery.