a group of people standing around a large balloon

Entering the basket of an observation balloon ID number: E01175 Photographer: Hurley, James Francis (Frank) Place: Belgium: Western Front (Belgium), Ypres Area, Ypres An unidentified officer entering the basket of an observation balloon prior to ascending near Ypres. Note the 'SJ' on the parachute harness that the officer is wearing. https://www.flickr.com/photos/australian-war-memorial/21795289218/in/album-72157659120304398/