Whakaotihia te rerenga e whai ake nei: I te tomokanga o Prussia ki te Rōpū Ono i te tau 1813, i mahi a Grolman hei Kaihauturu me te whakahau i tetahi roopu o Brandenburg Landwehr. I uru ia ki te Pakanga o Hagelberg me nga aukati o Magdeburg me Wesel. I te Hōngongoi 1814 i hoki mai a Grolman ki tana mahi kaiwhakawa, engari i riro i a ia te whakahau o tana peihana Landwehr i te tau e whai ake nei i nga Ra kotahi rau. Mo tana kaiārahi i Fleurus me
I whakawhiwhia ki a Wavre te Iron Cross 1st Class.