 On 10 March 1941 , with Operation Barbarossa looming , Felix was amended to Operation Felix @-@ Heinrich , whereby German troops would be withdrawn from the USSR to capture Gibraltar . As a result of Spanish dictator Francisco Franco 's intransigence , the operation was postponed , modified , and ultimately abandoned . 
 On 10 March 1941 , with Operation Barbarossa looming , Felix was amended to Operation Felix @-@ Heinrich , whereby German troops would be withdrawn from the USSR to capture Gibraltar . As a result of Spanish dictator Francisco Franco <a href='null_genetive' title='1'><mark>'s</mark></a>intransigence , the operation was postponed , modified , and ultimately abandoned . 
On 10 March 1941 , with Operation Barbarossa looming , Felix was amended to Operation Felix @-@ Heinrich , whereby German troops would be withdrawn from the USSR to capture Gibraltar . As a result of Spanish dictator Francisco Franco  intransigence , the operation was postponed , modified , and ultimately abandoned .