Original sentence: Although this policy of impressment was supposed to reclaim only British subjects, between 1806 and 1812 about 6,000 American citizens were pressed into the Royal Navy.One reason for this was that the British did not recognise American citizenship certificates issued to naturalised Britons and considered that anyone born a British subject remained British subject
Edited sentence: Although this policy of impressment was supposed to reclaim only British subjects, between 1806 and 1812 about 6,000 American citizens were kidnapped into the Royal Navy