One of the servicemen was released from hospital with a seven-day prognosis after allegedly being stabbed by Tommaso B?n Yousef Ismail Hosni in an attack recorded by video-surveillance cameras at the station.
Hosni is being held in Milan's San Vittore Prison pending formal charges.
Hosni carried out the attack with two kitchen knives after he was asked to produce ID, Milan Police Commissioner Marcello Cardona told journalists.
"He is not psychologically unbalanced," Cardona underlined, adding that Hosni had been living in a car on the outskirts of Milan and had sometimes slept rough at the central station.
Hosni was overpowered by security personnel at the central station in "eight seconds" after the "bloody" attack, said Cardona.
Hosni said it was too early to say if the attack was terrorism.
Milan anti-terrorism prosecutors are probing the attack after it emerged that a Facebook profile registered under Hosni's name contained Islamic State propaganda videos and posts praising the jihadist group.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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