No definite commitment was given by Hitler , but design work began on an 80 cm model .
Nothing further happened until March 1936 when , during a visit to Essen , Adolf Hitler inquired as to the giant guns ' feasibility .
No definite commitment was given by Adolf Hitler , but design work began on an 80 cm model .
Nothing further happened until March 1936 when , during a visit to Essen , Adolf Hitler inquired as to the giant guns ' feasibility .