The Cemeteries Department in Portsmouth tell me that Private Kinsell died in the ‘American Military Hospital, Milton’. They have never heard of this particular hospital, nor had I. There were three hospitals in the Milton area at the time – St James Hospital (known then as the lunatic asylum) opened in 1879. An infection diseases hospital opened near Milton Cemetery in 1884, and St Marys Hospital opened in 1898.
My (educated) guess is that part of one of these hospitals – possibly a room or two, maybe a ward – was taken over by the American Army in order to treat wounded doughboys from the Western Front.