Detailed Instructions: Classify the relation of question with context to one of these categories: 1) award received, 2) based on, collection, 3) conflict, 4) constellation, 5) convicted of, 6) date of death, 7) director, 8) drafted by, 9) educated at, 10) medical condition, 11) military branch, 12) narrative location, 13) occupation, 14) original network, 15) parent company, 16) point in time, 17) production company, 18) residence, 19) series, 20) service entry, 21) sex or gender, 22) spouse, 23) standards body question.
Q: Context : The .30-06 Springfield cartridge (pronounced ``thirty-aught-six'' or ``thirty-oh-six''), 7.62×63mm in metric notation and called ``.30 Gov't '06'' by Winchester, was introduced to the United States Army in 1906 and later standardized; it remained in use until the early 1980s. 
Question : What year did .30-06 Springfield come into use?
A:
service entry