how to change land doctrines?

[unmerged(57610)]

Hi all,
I'm playing as Japan right now but i can't change my land doctrine to german one. I abandonned pre-planned attacking but can't switch to german tree the button is redded out so I'm unable to choose it. Same case for others too like rapid deployement etc. Thanks in advance

 

[OLDTIMER]

Hi alinur,

after abandoning a doctrine you have to start researching it for a day, then cancel it. The other doctrines should now be available.

Rgds, Oldtimer

 

[unmerged(57610)]

Hi alinur,

after abandoning a doctrine you have to start researching it for a day, then cancel it. The other doctrines should now be available.

Rgds, Oldtimer

Thank you it's tricky indeed