In this task, you're given a passage, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both passage and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the passage or linked information.
Q: Passage: George Learmonth, baptized by Russian Orthodox Church as Yuri Andreevich Lermont (; 1590s1633) was a Scottish soldier in Russian service. Entered Russian service in 1613 as the ensign in regiment of captain-rittmeister Jacob Shaw. At least six of former members of the Belaia garrison, including George Learmonth, helped decisively turn back Prince Wladyslaw's troops in intense fighting at Moscow's Arbat Gates of Bely Gorod during defending Moscow against a Polish army. In that battle, Ensign George Learmonth's bravery was on display 'for all to see'. When Lieutenant David Edwards was killed in the defence of Moscow, the Irish soldiers in his company immediately petitioned to have George Learmonth replace him. Newly promoted Lieutenant Yuri Lermont received fifteen rubles per month. During the Smolensk War (16321634) he's Rittmeister of Moscouvite Reiters regiment of Charles d'Ebert, under command of Prince Semyon Prozorovsky, died in battle against units of Field Hetman of Lithuania Krzysztof Radziwi on 30 August 1633.
Link Information: none Answer: none
A:
How long had Jacob Shaw been captain of the regiment before Learmonth entered service?