Complex sentence: Toplis had made a habit of not being present with his regiment and his comings and goings cannot be accurately detailed, this is true of thousands of soldiers throughout WWI as testament from conscripted soldiers of the time upholds.
Split into simpler sentences: Toplis had made a habit of not being present with his regiment and his comings and goings cannot be accurately detailed. This is true of thousands of soldiers throughout WWI as testament from conscripted soldiers of the time upholds.