Well, if its the Somme 1916 then the tanks went in on the 15th Sept. This action became known as the Battle of Flers. 49 tanks were detailed to attack but only 32 tanks got to the start line. The tanks used were from C & D companies.
This little piece of the report by Lt A E Arnold of D company might help
"The German front line trenches had been practically shelled out of existence Dracula ( his tank) reached the German rear support line. As we emerged from the murk of battle a row of German heads appeared gazing in suprise at us over the parapet. By now the tank was on top of the trench and we paused to rake the enemy to port and starboard."
So a tank straddling a trench ...could look okay!
His tank was Mk1 Male with the Hotchkiss 57mm and Vickers machine guns