Le mortier de 7,6 FRC avec ses servants
An example of carriage-mounted mortar: the Belgian mortier de 7,6 FRC (FRC, translated, stands for Royal Cannon Foundry). Surprisingly (at least to me!), this mortar was also capable of direct fire. The Belgians' berets indicate the are part of the CHASSEURS ARDENNAIS (Hunters of the Ardennes), which I believe are commonly held as being among the best that Belgium had.
This is a companion discussion topic for the original entry at https://ww2incolor.com/gallery/other-forces/19631/le-mortier-de-76-frc-avec-ses-servants