Many early
Zionists felt that the revival of the
Hebrew language was a critical part of their endeavours. Hebrew was already a well-established language in the
land of Israel by the 1920s. However, with the arrival of thousands of immigrants to the land of Israel, as part of the
Third Aliyah, many
olim continued to speak their native languages, such as
Russian and
Yiddish. The Battalion of the Defenders of the Language was formed to protect the status of the Hebrew language, and promote its use among these newcomers. Among its most prominent supporters were , a Zionist Hebrew writer, who was one of the founders of the city of
Tel Aviv; and
Zvi Yehuda Kook, the son of the chief rabbi
Abraham Isaac Kook. Many of the activists came from the
Herzliya Hebrew Gymnasium, which had long been a centre of pro-Hebrew language activity — its alumni had organised a protest in 1913 against the use of
German, which was the language of instruction in the newly-founded
Technion institute. ==Activities==