The shortest ones always seem to give me the most problems. Hope someone can help with the last four clues, please.
3D Behind this rocket (5)
R ? T ? O
25D Thence at intervals policeman shortly appeared (3)
T ? C
16AC Initially with a revolutionary series of engagements (3)
W ? R
27AC Man having the Spanish fashion (5)
E ? T ? N
Thank you!