Some estimates put the number up to 5.5 million.[1] Between two-thirds and three-quarters of the over 3,000,000 Ostarbeiter were Ukrainians. Prof. Kondufor's statistic is that 2,244,000 Ukrainians were forced into slave labor in Germany during World War II. Another statistic puts the total at 2,196,166 for Ukrainian Ostarbeiter slaves in Germany (Dallin, p. 452).