Hi.
No, not all accidents on August 2nd, but the locations and all information available are vital when researching these losses. The losses for III./J.G.54 are listed as follows:
http://www.ahs.no/ref_db/lw_loss_pub...?lossid=113537
http://www.ahs.no/ref_db/lw_loss_pub...?lossid=106946
The fighter units of the Luftwaffe (including Ergänzungsjagdgruppen Ost, Süd and West) reported a total of 27 losses in all for this date. Of these, 10 are listed as being due to enemy action.
In your original question you asked for losses of J.G.1 on this date, and there were none.
Best regards,
Andreas