British army trucks of the 30s. Identification

[Konstantin Chernov]

1) Leyland Cub KDSX1 WD.There is no information about this truck. A high-quality photo can be purchased here https://www.britishcommercialvehicle...fice-l015016q/ I don't understand in what form the photo can be purchased: printed or electronic. In any case, it is expensive for me
2) The civilian version of the Leyland Cub KDSX1 is mentioned in The Commercial Motor magazine, 1934.
3) Leyland Cub KZDX1. I can't identify the uniform of the soldiers in this photo. Maybe it's one of the Baltic countries ? Source of the photo - Е. Д. Кочнев. Энциклопедия военных автомобилей 1769~2006 гг.
4) Leyland Cub KZDX1 in The Commercial Motor magazine, 1939.