Berres was born on 10 January 1920 in Koblenz, at the time in the Rhine Province during the Occupation of the Rhineland.

[8] On 18 July 1942 Berres claimed a Spitfire for his 10th victory while escorting Junkers Ju 88 bombers.

126 Squadron RAF lost Flight Lieutenant Charles B. MacLean in BR323 badly wounded.

Pilot Officer C. H. Latimer BR170 was wounded but managed to land after his Spitfire was badly damaged by a Bf 109.

[9] On 15 September 1942 Berres downed BP867 of 249 Squadron, flown by Flight Sergeant Bernard Peters who was killed.

[11] Berres achieved four victories in October 1942 as the Luftwaffe made its last major effort over the island before the end of the siege.

[12] On 8 November 1942 Operation Torch began and Allied forces invaded Vichy French Morocco and Algeria.

The Germans and Italians allocated large forces to prevent the Allied advance into Tunisia.

[15] The 11 December claim for a P-40 east of Ras Umm el Gavanigh was the Hawker Hurricane from 40 Squadron SAAF piloted by Lieutenant Shepherd.

[17] On 8 and 14 January 1943, he claimed a solitary victory over a Spitfire fighter and North American B-25 Mitchell bomber respectively.

On 7 March 1943 Berres engaged Spitfires over the frontline and claimed it shot down for his 33rd victory.

[20] At noon on 10 March Berres formed part of 30 Bf 109s from JG 77 committed to escorting 15 Junkers Ju 87s from Sturzkampfgeschwader 3 (StG 3).

RAF units intercepted and shot down and killed Stuka pilot Leutnant Heinz Üldemann.

[22] On 2 April Berres scrambled with 3./JG 77 and after claiming his 40th victory over a P-40 was shot down near Oudref but escaped back to German lines.

[23] On 7 April the British 1st Armoured Division and US II Corps linked up east of Gabes.

[24] In the large air battles Berres shot down a Spitfire flown by Flight Sergeant G. W. Sweeney of 601 Squadron.

[30] Berres was credited with 52 aerial victories, including six on the Eastern Front, claimed in 354 combat missions.