sentences:  This figure of confirmed claims includes 198 aerial victories on the Eastern Front and two on the Western Front, including one four-engined bomber.Victory claims were logged to a map-reference (PQ = "Planquadrat"), for example "PQ 08693".The "Luftwaffe" grid map () covered all of Europe, western Russia and North Africa and was composed of rectangles measuring 15 minutes of latitude by 30 minutes of longitude, an area of about .