[Richard Mills]

I am currently researching a Flugbuch which contains several bracketed abbreviations present in the descriptions of the mission detail.

Those that I can identify are as follows:
(LK) = Luftkampf
(LF) = Leicht Flak
(SF) = Schwere Flak
(SF u J) Schwere Flak und Jäger
(KF) Keine Feindberührung

However, I do need help with the following:
(SL) ?
(MSe or l) ?
(SMLF) ?

Any help whatsoever really will be a great help. Hopeful in anticipation.

Regards Richard.