Several of the 138.6 mm guns were also converted for service with the Army.

In order to take advantage of the design, a decision was made to further develop this into a 155 mm gun.

Two more twin 25 mm guns were also added later.

The 100 mm gun became useless after the first shot.

On the other hand a 105 mm gun would also be less powerful.

No.48 also came up against a battery of 150 mm guns.

It had a 90 mm gun and a crew of 5.

When they came under attack from German 88 mm guns.

Although in 1943 another 107 mm gun, the 9S-1, was developed, it never reached production.

They were also used to tow the 105 mm gun.