Some settlers pleaded with the troops to leave them alone, with others left quietly weeping.
As of Sunday evening, the Israeli army said it had cleared 20 of 21 Gaza settlements.
A senior Defense Ministry official says all 21 Gaza settlements will be razed within two weeks, about half the time previously predicted.
In the West Bank, security forces skirmished with some of the thousands of ultra-nationalists defending two northern settlements, who the army fears may use weapons when troops begin evicting their residents, most likely on Tuesday.
Dozens of settlers raced toward troops setting up a staging area near the settlement of Sanur, slashed tires of military vehicles and exchanged blows with the soldiers, in a prelude to what could be the most difficult mission of Prime Minister Ariel Sharon's "disengagement" plan. Ten police officers were slightly injured.
In Nissanit, cranes lifted up prefabricated homes and placed them on flatbed trucks, to be driven to Israel. Piles of rubble lined the settlement's main street. More houses were leveled in the settlement of Dugit. Last week, mobile homes were destroyed at the Kerem Atzmona outpost, but Sunday's demolitions marked the first time stone houses were taken down.
The amputation of Gaza from Israel, though painful, was far less bloody than expected, CBS News Correspondent David Hawkins reports. The one casualty may be Israel's settler movement, which has kept the country entrenched in the West Bank and Gaza for decades.
In comments at the start of a Cabinet meeting on Sunday, Prime Minister Ariel Sharon called acts of violent resistance to the pullout "hooliganism" and said Jewish settler leaders, once his friends and allies, were exploiting the suffering of their followers to push a political agenda.
The forcible removal of settlers in 21 Gaza communities began Wednesday, more than a year after Sharon concluded that Israel could no longer defend its 38-year-old occupation of the coastal strip, which Palestinians claim as part of a future state. The evacuations have proceeded with relatively little violence.
Katif, Atzmona and Slav, the remaining communities in the main settlement bloc, Gush Katif, were being emptied on Sunday, as was the northern Gaza settlement of Elei Sinai.
The last of the 21 Gaza settlements, Netzarim, is to be evacuated Monday, with the entire Gaza evacuation compressed into just one week, far shorter than the three weeks security forces foresaw.
Longtime resident Haim Ben-Arieh walked over to the commander of the group that had come to evict his family, shook his hand, and urged him to refuse to carry out the mission.
"I'm very sorry," said the soldier, who looked on the verge of tears. He gave the family until after noontime prayers to leave their unpacked home.
Ben-Arieh then turned to clip his front hedge. "I love this place and will take care of it until the bitter end," he said.
Residents held prayers and a farewell ceremony in the synagogue, then filed in a quiet, tearful procession to the waiting buses, led by the rabbi cradling a Torah scroll. Resigned to the inevitable, they had decided at a community meeting earlier to leave with dignity.
In Atzmona, outside the home of the Harush family, stood a mock cemetery with cardboard tombstones bearing the names of the Jews' foes across the ages--Pharoah, Titus, Haman, Hitler and Arafat.
An empty grave marked by a blank tombstone "was dug for anyone who expels Jews from their homes," explained 14-year-old Yehoyada, from the West Bank settlement of Efrat, who refused to give his family name.
Forces entering Slav encountered no resistance from the few families that remained. Most had left earlier to avoid being evicted.
Forces also entered the northern Gaza settlement of Elei Sinai, from where residents planned to leave on foot and walk to a gathering place in nearby Israel. Troops were going house to house there telling people to leave.
The Cabinet on Sunday authorized the removal of the remaining seven settlements.
U.S. Assistant Secretary of State David Welch said the Gaza pullout will re-energize the U.S.-sponsored "road map" peace plan, while giving Israelis and Palestinians more security and prosperity.
"The United States views the Israeli disengagement from Gaza as an important opportunity ... to take further steps forward toward a better future for Israelis and Palestinians," said Welsh, the first senior U.S. official to visit Gaza since October 2003 when Palestinians attacked a U.S. diplomatic convoy and killed three Americans.
Security officials expect violent resistance during the forcible evacuation of two northern West Bank communities, Sanur and Homesh, where some 2,000 anti-pullout opponents are camped out preparing for a fight.