During the German occupation in 1918 he helped to organise secret military groups that were supposed to form the basis of the Estonian armed forced once the German occupation was over.
Saksa okupatsiooni ajal 1918. a aitas organiseerida salajasi sõjaväelaste rühmi, mis pidid Saksa okupatsiooni loodetava langemise järel saama Eesti relvajõudude aluseks.