Kibbutz Dalia was founded by members of two Jewish groups affiliated with the Hashomer Hatzair movement who moved to Mandatory Palestine in 1933.
The first group was called "Ba-Ma'ale" (Hebrew: "במעלה"‎) and was composed of Romanian Jews.
They underwent agricultural training in Romania before making Aliyah and settling in Hadar Ramatayim, Magdiel (now part of Hod HaSharon) and Kfar Malal.
The other group was called "Ba-Mifneh" (Hebrew: "במפנה"‎) and was composed of German Jews.
Their agricultural training took place mostly in Denmark but also in France and the United Kingdom.
They settled in Karkur and earned a living from agriculture, construction and labor in the Port of Haifa.
The Kibbutz Artzi network of the Hashomer Hatzair movement has decided to unite the groups in April 1939 and the two were symbolically united on 1 May (International Workers' Day).
That same day 50 members, 25 from each group, arrived at the permanent location of the settlement, next to the Arab village of Daliat-El-Ruha (depopulated in 1948) and began cultivating the land which was owned by the Jewish National Fund (KKL).
The first industry of the kibbutz was a small soap factory.

The 1940s saw major developments in the kibbutz.
Between 1940 and 1943 a stable, cowshed (used until 1970), a pen, cheese factory, a textile factory, a chicken coop (used until 1973) and a beehive were built.
A road was paved by the members from the nearby kibbutz of Ein HaShofet, connecting it to the rest of the country's transportation system.
The first permanent building was a house, which housed the kibbutz' babies.
In the 40s the kibbutz also had a rabbit farm, which was the main source of meat during the austerity period of World War II.

In 1944 youth from the kibbutz organized a group, which later joined the Palmach militia.
One of their members died in the "Night of the Bridges", an operation by the Jewish militias against bridges on the borders of Mandatory Palestine.
They fought with the Yiftah Brigade during the 1948 Arab–Israeli War and some of them established Kibbutz Harel.
In 1947 the kibbutz housed a nationwide squad leader course for the Palmach.
During the war, an Egyptian plane was downed near the kibbutz and its pilot was caught and put in the kibbutz' cowshed, which drew the children's attention.
The kibbutz helped the war effort by donating its only truck and also using the local facilities to help Israel's military industries.
Kibbutz Dalia was founded by members of two Jewish groups affiliated with the Hashomer Hatzair movement who moved to Mandatory Palestine in 1933. The first group was called "Ba-Ma'ale" (Hebrew: "במעלה"‎) and was composed of Romanian Jews. They underwent agricultural training in Romania before making Aliyah and settling in Hadar Ramatayim, Magdiel (now part of Hod HaSharon) and Kfar Malal. The other group was called "Ba-Mifneh" (Hebrew: "במפנה"‎) and was composed of German Jews. Their agricultural training took place mostly in Denmark but also in France and the United Kingdom. They settled in Karkur and earned a living from agriculture, construction and labor in the Port of Haifa. The Kibbutz Artzi network of the Hashomer Hatzair movement has decided to unite the groups in April 1939 and the two were symbolically united on 1 May (International Workers' Day). That same day 50 members, 25 from each group, arrived at the permanent location of the settlement, next to the Arab village of Daliat-El-Ruha (depopulated in 1948) and began cultivating the land which was owned by the Jewish National Fund (KKL). The first industry of the kibbutz was a small soap factory.
The 1940s saw major developments in the kibbutz. Between 1940 and 1943 a stable, cowshed (used until 1970), a pen, cheese factory, a textile factory, a chicken coop (used until 1973) and a beehive were built. A road was paved by the members from the nearby kibbutz of Ein HaShofet, connecting it to the rest of the country's transportation system. The first permanent building was a house, which housed the kibbutz' babies. In the 40s the kibbutz also had a rabbit farm, which was the main source of meat during the austerity period of World War II.
In 1944 youth from the kibbutz organized a group, which later joined the Palmach militia. One of their members died in the "Night of the Bridges", an operation by the Jewish militias against bridges on the borders of Mandatory Palestine. They fought with the Yiftah Brigade during the 1948 Arab–Israeli War and some of them established Kibbutz Harel. In 1947 the kibbutz housed a nationwide squad leader course for the Palmach. During the war, an Egyptian plane was downed near the kibbutz and its pilot was caught and put in the kibbutz' cowshed, which drew the children's attention. The kibbutz helped the war effort by donating its only truck and also using the local facilities to help Israel's military industries.
Dalia, Israel