The M110A2 Self-Propelled Howitzer was first built in 1963. It was based on the experience of using British made 8-inch howitzers during the First World War. An American-made weapon, the M110A2 would give general support to troops in the field. It was used to counter enemy guns and suppress air defenses. The Howitzer would see service in the Vietnam War as well as the Persian Gulf War. Both the United States and the British armies had the weapon in their arsenal. However, after the Persian Gulf, the weapon was retired from service. Advances in technology made 155mm howitzers more effective in combat than the older M110A2.
Like other weapons in its inventory, the United States military exported the M110 to different nations. Japan and their self defense force being among them. When Godzilla re-appeared in 1984, the M110A2s went into action. The Japanese Self Defense Forces attempted to stop Godzilla from reaching Tokyo. Confronting the king of the monsters in Tokyo Bay, the M110A2s put up a spirited defense. Yet they were eventually destroyed with Godzilla incinerated the entire line of ground forces opposing him from the shore with a long blast of his atomic breath.
They would next see action when Godzilla returned in 1989. Although present at Lake Ashino, they did not engage Godzilla. The military spectated as the King of the Monsters battled the genetically engineered plant monster Biollante. However, they would see action near Wakasa Bay as the JSDF attempted to lure an ANEB infected Godzilla into range of the M 6000 TCS system. As before, Godzilla destroyed a large number of them with his atomic breath.
When a mysterious UFO landed in Japan in 1992, the M110A2s moved out along with other armored fighting vehicles of the JSDF. They surrounded the mysterious spaceship, preparing to attack it if things got out of control. Fortunately, the spaceship's occupants, who were humans from the future, appeared outside the ship. Using hologram technology, they were able to project themselves without actually leaving the craft. Talking to officials, the situation was defused... for the moment.
