Almost correct. But not pre and post but just post only.
1. the order introducing and difining the D-day markings was issued on April 8th 1944. But these markings were applied with a special order issued only at night of the 4/5th June 1944.
2. the full set of the D-day markings was used until the September 1944 when removed the markings from tops.
3. the markings at the undersides were used until beginning of year end.
To sum up .. the two images seem to be taken in the September 1944 and slightly after that. Perhaps in October.
1. the order introducing and difining the D-day markings was issued on April 8th 1944. But these markings were applied with a special order issued only at night of the 4/5th June 1944.
2. the full set of the D-day markings was used until the September 1944 when removed the markings from tops.
3. the markings at the undersides were used until beginning of year end.
To sum up .. the two images seem to be taken in the September 1944 and slightly after that. Perhaps in October.