Oxford English dictionary.
https://en.oxforddictionaries.com/definition/conscription
Compulsory enlistment for state service, typically into the armed forces.
‘conscription was extended to married men’
Early 19th century: via French (conscription was introduced in France in 1798), from late...
National Service involves conscription ie you can't get out of military service at 18 or you can defer it to 21 if you're going to uni. You used the word conscription.
What Macron is bringing in, is called National Service, but a very different sort, where 16 year olds can do a bit military...
The reason I mentioned the article is that the French national service, includes charity work, community service and voluntary work for 6 weeks, NOT military service, unless the youngster requests it.