JWAYYA, Lebanon — The winding streets of this southern Lebanese village were empty of cars. And of people, too.The signs of life were the buzz of Israeli surveillance drones overhead and, below, a half-dozen or so Hezbollah loyalists, sitting in a small storefront along an abandoned street with these supplies: a walkie-talkie, bottles of water, and patience.

“We are waiting,” Jamal Nasser, a burly man in civilian clothes, said. “We are here, and we’re not going anywhere.”

Three weeks into its war with Israel, Hezbollah has retained its presence in southern Lebanon, often the sole authority in devastated towns along the Israeli border. The militia is elusive, with few logistics, little hierarchy, and less visibility. Often, even residents say they don’t know how they operate or are organized. Communication is by walkie-talkies, always in code, and sometimes messages are delivered by motorcycle. Weapons seem to be already in place across a terrain that fighters say they know intimately.

“On the ground, face to face, we’re better fighters than the Israelis,” Hajj Abu Mohammed, 44, said. Mr. Mohammed is a bearded militiaman in the village of Srifa, whose walkie-talkie crackled and cell phone rang with a Hezbollah anthem.

Israel has claimed to have destroyed Hezbollah’s infrastructure in a 22-day campaign that has driven hundreds of thousands from their homes and wrecked village after village along valleys sometimes charred by fires. The group says it has suffered losses, but in the fighting so far, it has demonstrated its detailed planning since the Israeli withdrawal from southern Lebanon in 2000, ending its 18-year occupation. Fighters appear to exercise a great deal of autonomy, a flexibility evident along the region’s back roads: ammunition loaded in cars, trucks in camouflage, rocket launchers tucked in banana plantations.

Analysts say the militia could probably hold out a month, without serious resupply. Fighters and supporters suggest that time is their advantage in a war that most suspect will not have a conclusive end. In conversations in southern Lebanon, its supporters seem most adamant in trying to deprive either Israel or America of any political gains from the military campaign.

“We’ll never submit to oppression, whatever the force applied, whatever the time it takes,” one of the group gathered in Jwayya said Tuesday. “You won’t find any difference between 21 days and 121 days. The difference is solely a matter of time.”

South of the Litani River, the region of Lebanon that Israel has threatened to invade, village after village is like a ghost town. Traffic rarely plies roads that pass often-spectacular destruction, rubble spilling into sun-drenched streets. In Sidiqin, the wall of a home was sheared off to show a table still set with dishes, as if the family fled in a moment. In Srifa, where villagers say 35 bodies remain buried under rubble from a bombing in the war’s first week, the wiry Mr. Mohammed was one of the few people left.

“We’re in a defensive position,” he said.

The smell of decomposing bodies hung in the air. Overhead were the contrails of Israeli jets. “There will still be a lot of big surprises,” he said.

Hezbollah appears to have hewn to a two-fold strategy so far in the war. Strategically, it has calibrated the barrages of its short- and long-range rockets, trying to match what it views as each Israeli escalation with its own response. In a relative lull in fighting Monday and Tuesday, when Israel suggested it would halt air attacks for a time, only a few rockets were fired into Israel. As it renewed its offensive Wednesday in a string of villages, Hezbollah fired the most missiles of the war.

“Our missile capacity is still untouched,” the deputy head of Hezbollah’s political bureau, Mahmoud Qamati, said in an interview in Beirut. “It is sufficient at two levels, in quantity for the missiles they know of, and in quality for those they still don’t know about — the type or the range.” He added, “We have enough missiles for months.”

On the ground, its fighters appear eager to draw Israel deeper into the country, stretching supply lines, or see them hunkered down in villages where they would be more vulnerable to the guerrilla-style attacks that Hezbollah used in Bint Jbeil, where eight Israeli soldiers were killed in an ambush. Israeli forces seem wary of falling into a trap and have, so far, moved exceedingly slowly through Lebanese territory — on the ground, just a few miles inside the country.

Often, not much infrastructure exists to be destroyed among guerrillas who fade into the villages they hail from.

“They are to get Hezbollah to come out and meet them, and Hezbollah is trying to lure them deeper into Lebanon,” Timur Goksel said. Mr. Goksel is a former spokesman and senior adviser to the U.N. force in Lebanon as well as an expert on Hezbollah. “From now on, it depends on who’s more patient.”

Among the fighters and grass-roots loyalists of Hezbollah, especially on the ground level, in villages where they are often defending their homes, views are hardened and expressed bluntly. They contend that Israel was planning the attack long before its two soldiers were seized last month. To them, it fits seamlessly into their narrative of Israeli ambitions in Lebanon — invasions in 1978 and 1982 and campaigns against Hezbollah in 1993 and 1996. In that, today’s fighting is more another battle than a war in itself. In its ideology, Hezbollah does not recognize Israel as a legitimate state. Yet the words today are more brittle, defensive, and even visceral. Israel’s existence is rarely mentioned. Rather, the fighters talk about fighting for their own survival.

Even Lebanese critics remark on the devotion of Hezbollah’s fighters, sometimes with a sense of awe.

“The most important element about this war is its moral dimension. Hezbollah has prepared itself for this war. Its fighters have been indoctrinated to fight until victory,” a military analyst and retired Lebanese army general, Nizar Abdel Kader, said.

“This type of indoctrination creates a mood of competition among fighters — competition over bravery, over performance, and over who is going to be a martyr first,” he said. “This is a key element to combat performance.”

The men in Jwayya, a small town in the hinterland above Tyre, gathered around a small plastic table. They deferred to an older man they addressed as Sayyid Abu Ali, who smoked a cigarillo. Cars passed by occasionally, where a few terse words were exchanged. The rest of the time, conversation revolved around their confidence over a war that, at least for now, Hezbollah believes it is winning. While the war outside may have inflated the rhetoric, no one seemed to have any doubts.

“The aggression gives birth to resistance,” Mr. Abu Ali said.

Another man nodded. “Every civilian killed, his children, when they get older, will join the resistance,” he said.