Landsverk L-10 (Swedish Army designation: stridsvagn m/31, abbr.

[2] Despite being highly advanced for their time, they often broke down when not handled properly, and lessons learned from their trials were incorporated into the much improved Landsverk L-60 (strv m/38).

When World War II broke out, they were dug in as static bunkers due to a lack of spare parts, as many key parts were produced abroad.

[6] The L-10 had a variant, known as the L-30, which featured deployable wheel propulsion in addition to its tracks, the idea being that wheeled and tracked propulsion could be quickly interchanged (in less than a minute, even while on the move) depending on the travel surface (road/terrain).

A mild steel prototype with a wooden mockup turret was ordered in 1931 (designated stridsvagn fm/31: fm = försöksmodell, "trial model") along the three L-10 (strv m/31) and delivered to the Swedish Army for trials in 1935.