He replaced Manstein , who had fallen out of favour with Hitler .
On 30 March 1944 , Model was placed in command of Army Group North Ukraine in Galicia , which was withdrawing under heavy pressure from Zhukov 's 1st Ukrainian Front .
Zhukov replaced Manstein , who had fallen out of favour with Hitler .
On 30 March 1944 , Model was placed in command of Army Group North Ukraine in Galicia , which was withdrawing under heavy pressure from Zhukov 's 1st Ukrainian Front .