There's a photo in the Tankogard A7V book (p.19) of the same location. The A7Vs are being unloaded from railcars - the last image (above) seems to show them moving away from the unloading point. The location is Monceau-sur-Sambre in late March 1918. Two of the A7Vs are identified as 542 and 543.
542 and 543 belonged to Abt. 2 and 3. These abteilungs took part in action first time in April. According to Heigl's Taschenbuch, Teil III, Abt. 3 was "established", which means in full readiness, on 28th march.
So, this shows the Abt. 2 and 3 arrival to the front (or base of tank troops) 28th - 31st march 1918.
I checked the place from the map. Place seems to be railway station of Charleroi.
It's the Marchienne-au-Pont rail station. - This should be the entraining for Reims in late May 1918. - At left is 560, followed by 541. The two tanks at right ought to be 527 and 526. 562 is still missing.
-- Edited by mad zeppelin on Friday 10th of December 2010 10:51:04 AM
-- Edited by mad zeppelin on Friday 10th of December 2010 04:26:37 PM
I seem to be unable to edit the above post for a third time.
The tanks display the number-in-circle unit symbol on the side armour. Thus, the picture was taken well after Villers-Bretonneux. The tank at forward left seems to have 1st lot front armour, making it 562. The one behind is 541. The two at left can be 526, 527 and/or 560, no way to tell from the rear. This is the entraining for the action near Reims taking place in late May 1918. 527 was lost on June 1st, 526 damaged on the same day. 562 was abandoned on June 9th and salvaged later.
Damn, the front left tank is a second lot male, thus 560. Making the right two vehicles 526, 527 and/or 562 (again notpossible to know which ones exactly seeing the tanks from the rear).