Question: when did the us military began hiring civilian employees
[{'answer': '1871', 'provenance': [{'wikipedia_id': '6553678', 'title': 'United States federal civil service', 'start_paragraph_id': 1, 'start_character': 240, 'end_paragraph_id': 1, 'end_character': 244, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6553678', 'title': 'United States federal civil service', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 393, 'bleu_score': 0.764439679081068, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1623795037483325521}, 'section': 'Section::::Abstract.'}]}]